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blender/intern/cycles/render/attribute.cpp
Brecht Van Lommel bf25f1ea96 Cycles Hair: refactoring to store curves with the index of the first key and the 
number of keys in the curve, rather than curve segments with the indices of two
keys. ShaderData.segment now stores the segment number in the curve.
2013-01-03 12:09:09 +00:00

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9.7 KiB
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/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "mesh.h"
#include "attribute.h"
#include "util_debug.h"
#include "util_foreach.h"
CCL_NAMESPACE_BEGIN
/* Attribute */
void Attribute::set(ustring name_, TypeDesc type_, AttributeElement element_)
{
name = name_;
type = type_;
element = element_;
std = ATTR_STD_NONE;
/* string and matrix not supported! */
assert(type == TypeDesc::TypeFloat || type == TypeDesc::TypeColor ||
type == TypeDesc::TypePoint || type == TypeDesc::TypeVector ||
type == TypeDesc::TypeNormal);
}
void Attribute::reserve(int numverts, int numtris, int numcurves, int numkeys)
{
buffer.resize(buffer_size(numverts, numtris, numcurves, numkeys), 0);
}
void Attribute::add(const float& f)
{
char *data = (char*)&f;
size_t size = sizeof(f);
for(size_t i = 0; i < size; i++)
buffer.push_back(data[i]);
}
void Attribute::add(const float3& f)
{
char *data = (char*)&f;
size_t size = sizeof(f);
for(size_t i = 0; i < size; i++)
buffer.push_back(data[i]);
}
size_t Attribute::data_sizeof() const
{
if(type == TypeDesc::TypeFloat)
return sizeof(float);
else
return sizeof(float3);
}
size_t Attribute::element_size(int numverts, int numtris, int numcurves, int numkeys) const
{
if(element == ATTR_ELEMENT_VALUE)
return 1;
if(element == ATTR_ELEMENT_VERTEX)
return numverts;
else if(element == ATTR_ELEMENT_FACE)
return numtris;
else if(element == ATTR_ELEMENT_CORNER)
return numtris*3;
else if(element == ATTR_ELEMENT_CURVE)
return numcurves;
else if(element == ATTR_ELEMENT_CURVE_KEY)
return numkeys;
return 0;
}
size_t Attribute::buffer_size(int numverts, int numtris, int numcurves, int numkeys) const
{
return element_size(numverts, numtris, numcurves, numkeys)*data_sizeof();
}
bool Attribute::same_storage(TypeDesc a, TypeDesc b)
{
if(a == b)
return true;
if(a == TypeDesc::TypeColor || a == TypeDesc::TypePoint ||
a == TypeDesc::TypeVector || a == TypeDesc::TypeNormal)
{
if(b == TypeDesc::TypeColor || b == TypeDesc::TypePoint ||
b == TypeDesc::TypeVector || b == TypeDesc::TypeNormal)
{
return true;
}
}
return false;
}
const char *Attribute::standard_name(AttributeStandard std)
{
if(std == ATTR_STD_VERTEX_NORMAL)
return "N";
else if(std == ATTR_STD_FACE_NORMAL)
return "Ng";
else if(std == ATTR_STD_UV)
return "uv";
else if(std == ATTR_STD_GENERATED)
return "generated";
else if(std == ATTR_STD_UV_TANGENT)
return "tangent";
else if(std == ATTR_STD_UV_TANGENT_SIGN)
return "tangent_sign";
else if(std == ATTR_STD_POSITION_UNDEFORMED)
return "undeformed";
else if(std == ATTR_STD_POSITION_UNDISPLACED)
return "undisplaced";
else if(std == ATTR_STD_MOTION_PRE)
return "motion_pre";
else if(std == ATTR_STD_MOTION_POST)
return "motion_post";
else if(std == ATTR_STD_PARTICLE)
return "particle";
else if(std == ATTR_STD_CURVE_TANGENT)
return "curve_tangent";
else if(std == ATTR_STD_CURVE_INTERCEPT)
return "curve_intercept";
return "";
}
/* Attribute Set */
AttributeSet::AttributeSet()
{
triangle_mesh = NULL;
curve_mesh = NULL;
}
AttributeSet::~AttributeSet()
{
}
Attribute *AttributeSet::add(ustring name, TypeDesc type, AttributeElement element)
{
Attribute *attr = find(name);
if(attr) {
/* return if same already exists */
if(attr->type == type && attr->element == element)
return attr;
/* overwrite attribute with same name but different type/element */
remove(name);
}
attributes.push_back(Attribute());
attr = &attributes.back();
attr->set(name, type, element);
/* this is weak .. */
if(triangle_mesh)
attr->reserve(triangle_mesh->verts.size(), triangle_mesh->triangles.size(), 0, 0);
if(curve_mesh)
attr->reserve(0, 0, curve_mesh->curves.size(), curve_mesh->curve_keys.size());
return attr;
}
Attribute *AttributeSet::find(ustring name) const
{
foreach(const Attribute& attr, attributes)
if(attr.name == name)
return (Attribute*)&attr;
return NULL;
}
void AttributeSet::remove(ustring name)
{
Attribute *attr = find(name);
if(attr) {
list<Attribute>::iterator it;
for(it = attributes.begin(); it != attributes.end(); it++) {
if(&*it == attr) {
attributes.erase(it);
return;
}
}
}
}
Attribute *AttributeSet::add(AttributeStandard std, ustring name)
{
Attribute *attr = NULL;
if(name == ustring())
name = Attribute::standard_name(std);
if(triangle_mesh) {
if(std == ATTR_STD_VERTEX_NORMAL)
attr = add(name, TypeDesc::TypeNormal, ATTR_ELEMENT_VERTEX);
else if(std == ATTR_STD_FACE_NORMAL)
attr = add(name, TypeDesc::TypeNormal, ATTR_ELEMENT_FACE);
else if(std == ATTR_STD_UV)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CORNER);
else if(std == ATTR_STD_UV_TANGENT)
attr = add(name, TypeDesc::TypeVector, ATTR_ELEMENT_CORNER);
else if(std == ATTR_STD_UV_TANGENT_SIGN)
attr = add(name, TypeDesc::TypeFloat, ATTR_ELEMENT_CORNER);
else if(std == ATTR_STD_GENERATED)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_VERTEX);
else if(std == ATTR_STD_POSITION_UNDEFORMED)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_VERTEX);
else if(std == ATTR_STD_POSITION_UNDISPLACED)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_VERTEX);
else if(std == ATTR_STD_MOTION_PRE)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_VERTEX);
else if(std == ATTR_STD_MOTION_POST)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_VERTEX);
else
assert(0);
}
else if(curve_mesh) {
if(std == ATTR_STD_UV)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CURVE);
else if(std == ATTR_STD_GENERATED)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CURVE);
else if(std == ATTR_STD_MOTION_PRE)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CURVE_KEY);
else if(std == ATTR_STD_MOTION_POST)
attr = add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CURVE_KEY);
else if(std == ATTR_STD_CURVE_TANGENT)
attr = add(name, TypeDesc::TypeVector, ATTR_ELEMENT_CURVE_KEY);
else if(std == ATTR_STD_CURVE_INTERCEPT)
attr = add(name, TypeDesc::TypeFloat, ATTR_ELEMENT_CURVE_KEY);
else
assert(0);
}
attr->std = std;
return attr;
}
Attribute *AttributeSet::find(AttributeStandard std) const
{
foreach(const Attribute& attr, attributes)
if(attr.std == std)
return (Attribute*)&attr;
return NULL;
}
void AttributeSet::remove(AttributeStandard std)
{
Attribute *attr = find(std);
if(attr) {
list<Attribute>::iterator it;
for(it = attributes.begin(); it != attributes.end(); it++) {
if(&*it == attr) {
attributes.erase(it);
return;
}
}
}
}
Attribute *AttributeSet::find(AttributeRequest& req)
{
if(req.std == ATTR_STD_NONE)
return find(req.name);
else
return find(req.std);
}
void AttributeSet::reserve()
{
foreach(Attribute& attr, attributes) {
if(triangle_mesh)
attr.reserve(triangle_mesh->verts.size(), triangle_mesh->triangles.size(), 0, 0);
if(curve_mesh)
attr.reserve(0, 0, curve_mesh->curves.size(), curve_mesh->curve_keys.size());
}
}
void AttributeSet::clear()
{
attributes.clear();
}
/* AttributeRequest */
AttributeRequest::AttributeRequest(ustring name_)
{
name = name_;
std = ATTR_STD_NONE;
triangle_type = TypeDesc::TypeFloat;
triangle_element = ATTR_ELEMENT_NONE;
triangle_offset = 0;
curve_type = TypeDesc::TypeFloat;
curve_element = ATTR_ELEMENT_NONE;
curve_offset = 0;
}
AttributeRequest::AttributeRequest(AttributeStandard std_)
{
name = ustring();
std = std_;
triangle_type = TypeDesc::TypeFloat;
triangle_element = ATTR_ELEMENT_NONE;
triangle_offset = 0;
curve_type = TypeDesc::TypeFloat;
curve_element = ATTR_ELEMENT_NONE;
curve_offset = 0;
}
/* AttributeRequestSet */
AttributeRequestSet::AttributeRequestSet()
{
}
AttributeRequestSet::~AttributeRequestSet()
{
}
bool AttributeRequestSet::modified(const AttributeRequestSet& other)
{
if(requests.size() != other.requests.size())
return true;
for(size_t i = 0; i < requests.size(); i++) {
bool found = false;
for(size_t j = 0; j < requests.size() && !found; j++)
if(requests[i].name == other.requests[j].name &&
requests[i].std == other.requests[j].std)
{
found = true;
}
if(!found) {
return true;
}
}
return false;
}
void AttributeRequestSet::add(ustring name)
{
foreach(AttributeRequest& req, requests)
if(req.name == name)
return;
requests.push_back(AttributeRequest(name));
}
void AttributeRequestSet::add(AttributeStandard std)
{
foreach(AttributeRequest& req, requests)
if(req.std == std)
return;
requests.push_back(AttributeRequest(std));
}
void AttributeRequestSet::add(AttributeRequestSet& reqs)
{
foreach(AttributeRequest& req, reqs.requests) {
if(req.std == ATTR_STD_NONE)
add(req.name);
else
add(req.std);
}
}
bool AttributeRequestSet::find(ustring name)
{
foreach(AttributeRequest& req, requests)
if(req.name == name)
return true;
return false;
}
bool AttributeRequestSet::find(AttributeStandard std)
{
foreach(AttributeRequest& req, requests)
if(req.std == std)
return true;
return false;
}
size_t AttributeRequestSet::size()
{
return requests.size();
}
void AttributeRequestSet::clear()
{
requests.clear();
}
CCL_NAMESPACE_END
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